Abstract
Solar global acoustic oscillations in a multilayer model of the solar atmosphere are studied in the plane-parallel geometry. Calculated frequencies of acoustic modes of the Sun are found to depend on parameters of the temperature profile used in the model. Larger influence on frequencies comes from values of the temperature gradient in the convection zone, and less influence from values of the thickness L of the transitional layer and from values of the ratio τ≡Tc/Tp of the coronal and the photospheric temperature, Tc and Tp, respectively. The uncertainties in determining these parameters can easily yield frequency shifts that are larger than the observational accuracy. This then indicates a possibility for a diagnostics of solar plasma based on known values of observed oscillation frequencies.
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References
Abramowitz, M. and Stegun, I. A.: 1965, Handbook of Mathematical Functions, Dover publications, Inc., New York.
Campbell, W. R. and Roberts, B.: 1989, Astrophys. J. 338, 538.
Christensen-Dalsgaard, J.: 1996, in T. Roca Cortés and F. Sánchez (eds), The Structure of the Sun, Cambridge University Press, Cambridge, p. 47.
Christensen-Dalsgaard, J. and Däppen, W.: 1992, Astron. Astrophys. 4, 267.
Cox, A. N., Guzik, J. A., and Kidman, R. B.: 1989, Astrophys. J. 342, 1187.
Durrant, C. J.: 1988, The Atmosphere of the Sun, Adam Hilger, Bristol.
Evans, D. J. and Roberts, B.: 1990, Astrophys. J. 356, 704.
Evans, D. J. and Roberts, B.: 1991, Astrophys. J. 371, 387.
Fröhlich, C., Andersen, B. N., Appourchaux, T., Berthomieu, G., Crommelynck, D. A., Domingo, V., Fichot, A., Finsterle, W., Gómez, M. F., Gough, D., Jiménez, A., Leifsen, T., Lombaerts, M., Pap, J. M., Provost, J., Roca Cortés, T., Romero, J., Roth, H., Sekii, T., Telljohann, U., Toutain, T., and Wehrli, C.: 1997, Solar Phys. 170, 1.
Jain, R. and Roberts, B.: 1994, Astron. Astrophys. 286, 243.
Pintér B., Čadež, V. M., and Goossens, M.: 1998, Astron. Astrophys., in press.
Sakurai, T., Goossens, M., and Hollweg, J. V.: 1991, Solar Phys. 133, 227.
Tirry, W. J., Goossens, M., Pintér, B., Čadež, V. M., and Vanlommel, P.: 1997, Astrophys. J., submitted.
Tomczyk, S., Schou, J., and Thompson, M. J.: 1995, Astrophys. J. 448, L57.
Tomczyk, S., Streander, K., Card, G., Elmore, D., Hull, H., and Cacciani, A.: 1995, Solar Phys. 159, 1.
Wright, A. N. and Thompson, M. J.: 1992, Astron. Astrophys. 264, 701.
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Vanlommel, P., Čadež, V. Influence of temperature profile on solar acoustic modes. Solar Physics 182, 263–281 (1998). https://doi.org/10.1023/A:1005089803316
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DOI: https://doi.org/10.1023/A:1005089803316